I use the PS when I 1st got my blower and a 2v is used between the ballancer and blower pulley.You can shim out the PS pump with washers if needed and the PS pulley i had was for an a/c car.I have my 2 vee pullays still on and it has not stressed the blower or crank snout at all. ps: are you using a belt drive waterpump or electric? Stock alternator location or low mount?